2003 Opel Signum vs. 2006 Rover 75
To start off, 2006 Rover 75 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,495 cc (6 cylinders), 2006 Rover 75 is equipped with a bigger engine. In terms of performance, 2006 Rover 75 (175 HP @ 4000 RPM) has 76 more horse power than 2003 Opel Signum. (99 HP @ 3120 RPM) In normal driving conditions, 2006 Rover 75 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 250 kg more than 2006 Rover 75.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2006 Rover 75 (240 Nm @ 4000 RPM) has 10 more torque (in Nm) than 2003 Opel Signum. (230 Nm @ 1500 RPM). This means 2006 Rover 75 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum. 2006 Rover 75 has automatic transmission and 2003 Opel Signum has manual transmission. 2003 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Rover 75 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Opel Signum | 2006 Rover 75 | |
| Make | Opel | Rover |
| Model | Signum | 75 |
| Year Released | 2003 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 2495 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 175 HP |
| Engine RPM | 3120 RPM | 4000 RPM |
| Torque | 230 Nm | 240 Nm |
| Torque RPM | 1500 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 80 mm |
| Engine Stroke Size | 90 mm | 82.8 mm |
| Engine Compression Ratio | 18.5:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 185 km/hour | 220 km/hour |
| Acceleration 0-100mph | 14.3 seconds | 8.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1620 kg | 1370 kg |
| Vehicle Length | 4640 mm | 4750 mm |
| Vehicle Width | 1800 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2750 mm |
| Fuel Consumption Overall | 5.9 L/100km | 9.7 L/100km |
| Fuel Tank Capacity | 60 L | 65 L |
